Report on Pontoniinae shrimps (Crustacea: Decapoda) collected by Joint Chinese-German Marine Biology Expeditions to Hainan Island, South China Sea Ⅱ. Harpiliopsis, Ischnopontonia, Jocaste, Palaemonella, Periclimenaeus, Periclimenella

The present paper reports 9 species of pontoniine shrimps collected from Hainan Island, South China Sea, by the Joint Chinese-German Marine Biology Expeditions, in which,Periclimenaeus arabicus(Calman, 1939) andPericlimenaeus hecate(Nobili, 1904) are recorded for the first time from Hainan Island.

Distribution of Dissolved Inorganic Phosphate in Nansha Islands Sea Area, Southern South China Sea

Based on the survey data from the program Multidisciplinary Expedition to Nansha Islands Sea Area, the distribution of dissolved inorganic phosphate ( PO43--P ) in the sea water of Nansha Islands Sea Area is comprehensively analyzed in this paper. The results show that PO43--P concentration in the sea water of southeastern Nansha Islands Sea Area is commonly higher than that in the other sea areas; the vertical distribution of PO43--P concentration varies inconspicuously in different seasons; the concentration of PO43--P increases with water depth and changes most greatly in the layer of 50 ～ 100 m. The diurnal variation of PO43--P concentration differs in different seasons and at different observation stations. The distribution and variation of PO43--P concentration result from the physical and biological processes together.

汤姆斯父子入藏:美国插手中国西藏问题的开始

1949年夏秋,美国政府决定选派"无线电评论员"汤姆斯父子入藏"探险"。入藏之后,他们竭力鼓吹西藏是"独立国",要求美国政府援助噶厦中的分裂分子。在拉萨期间,汤姆斯父子竭力蛊惑噶厦官员组建游击部队,以游击战术阻止人民解放军进军西藏,表示美国会予以援助。美国虽未公开声称西藏是"独立国",但是开始援助并考虑派官员以"旅行家"名义再次入藏。汤姆斯父子入藏,是美国在新中国成立前采取干涉西藏问题的重大举措,企图阻挠中国共产党顺利解决西藏问题。